How to choose the fit cbn inserts grade for the alloy machining? Maybe we should know the characteristics of the heat resistance alloy firstly.

Metals that can operate at temperatures > 700°C are commonly referred to as heat resistant alloys. "Heat resistant" means that it maintains sufficient strength and strength 

and good oxidation resistance at high temperatures.

The heat resistant alloy is mainly classified into an iron base, a nickel base, a molybdenum base, a bismuth base and a tungsten base heat resistant alloy. Among them, 

nickel-based alloy is the best super-heat-resistant metal material, and its use temperature can reach 1000~1100 °C. The superalloys commonly used in aircraft engines are 

commonly known as "super heat-resistant alloys", mainly nickel-based superalloys such as GH4169 (inconel718).

Heat resistant alloys, especially high temperature alloys, are the most difficult materials to process in difficult materials. The main features are large plastic deformation, large 

cutting force, serious chill phenomenon, high cutting temperature, easy tool wear and unsatisfactory part progress (mainly affected by cutting temperature and tool wear).

Superalloys are mainly used to manufacture high temperature components such as turbine blades, guide vanes, turbine disks, high pressure compressor disks and combustion 

chambers for aerospace, naval and industrial gas turbines, as well as for aerospace vehicles, rocket engines, nuclear reactors, petrochemical plants, and Energy conversion devices

such as coal conversion.